Zinc Sulfate Monohydrate
Zinc sulfate monohydrate (ZnSO4·H2O) is a chemically defined inorganic salt of zinc used primarily as a fertilizer micronutrient and in animal feed supplements. It falls under HTS 2833.29.45.00 as a sulfate of zinc, distinct from other metal sulfates in the heading. This white crystalline powder provides essential zinc for plant growth and livestock nutrition.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with other fertilizers for retail sale
Fertilizer mixtures containing sulfates fall under Chapter 31 as mineral/chemical fertilizers, not pure chemicals.
If containing additives or impurities exceeding chemical purity standards
Prepared chemical mixtures or preparations not chemically defined classify in 3824, per Chapter 28/29 notes.
If double or complex salt with another metal
Chapter notes specify double/complex salts of metals go to 2842, not simple sulfates.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Verify purity and hydration state via Certificate of Analysis to confirm classification under 2833.29.45.00 and avoid reclassification as a mixture
• Include safety data sheets (SDS) for hazardous material handling; zinc sulfate is irritant but non-DG unless in solution
Related Products under HTS 2833.29.45.00
Anhydrous Zinc Sulfate
Anhydrous zinc sulfate (ZnSO4) is the water-free form used in pharmaceuticals, electroplating, and as a catalyst precursor. It qualifies for HTS 2833.29.45.00 as a chemically pure sulfate of zinc per Chapter 28 notes. This fine white powder is highly reactive due to lack of hydration.
Zinc Sulfate Crystals
Large crystal form of zinc sulfate heptahydrate used in educational labs and small-scale industrial processes. Classified as other sulfates of zinc under HTS 2833.29.45.00 due to its chemical purity. Effloresces in dry air, forming characteristic white crystals.
Zinc Sulfate Heptahydrate
Zinc sulfate heptahydrate (ZnSO4·7H2O), commonly known as zinc vitriol, is a hydrated form of zinc sulfate used in water treatment, leather processing, and as a laboratory reagent. Classified under HTS 2833.29.45.00 as 'other sulfates of zinc' due to its chemical definition as a zinc salt. The colorless crystals dissolve readily for industrial applications.
Zinc Sulfate USP Grade
USP-grade zinc sulfate meets United States Pharmacopeia standards for medicinal use in supplements and topical ointments. As a purified sulfate of zinc, it is classified under HTS 2833.29.45.00 for import. This ensures compliance for human consumption applications.
Technical Grade Zinc Sulfate
Technical grade zinc sulfate is used in industrial applications like rayon production, pigments, and flame retardants. It is a cost-effective sulfate of zinc classified under HTS 2833.29.45.00 when chemically defined. Lower purity suits non-pharma manufacturing.
Zinc Sulfate for Animal Feed
Feed-grade zinc sulfate provides trace mineral supplementation in poultry and livestock nutrition. As a pure zinc sulfate compound, it imports under HTS 2833.29.45.00 before mixing into feeds. Meets AAFCO standards for mineral content.